Assignment 1, due Jan 16th at noon
Ch1 Q19. In each of the following examples, indicate which variable is the explanatory variable and
which is the response variable.
a. The anticoagulant warfarin is often used as
MID-TERM BIOL 300: October 2014
1. (10 points) A recent episode of the Tonight Show had Jimmy Fallon playing Russian
egg roulette. There were a dozen (12) eggs, and 4 of them were raw and 8 were boiled.
The eggs were smashed on either J immy F allon’s or
BIOL 300 Assignment 6, Spring 2014
Assignment 6 (due March 7): Chapter 11, problems 11, 12, 13, 17.
Chapter 11
11. The standard error is SE = s / n = 0.66 /
13.3 to 14.7 mm.
6 = 0.269. t 0.05(2),5 = 2.57, so the 95% CI is
12. (a) The researchers had separ
BIOL 300 Assignment 3, Spring 2014
Assignment 3 (due Jan. 31): Chapter 4, problems 10, 13; Chapter 5, problems 18, 19, 24, 25.
Chapter 4
10. No (the true mean and the sample confidence limits are all constants, so there is no
probability involved). The co
BIOL 300 Assignment 4, Spring 2014
Assignment 4 (due Feb. 7): Chapter 6, problems 15, 16, 17; Chapter 7, problems 14, 17.
Chapter 6
15. (a) H0: Males from the two populations have the same probability of being chosen (i.e., p
= 0.5, where p is the probabi
BIOL 300 Assignment 7, Spring 2014
Assignment 7 (due March 14): Chapter 12, problems 16 (assume normality but not equal
variances), 18, 19, 25.
Chapter 12
16. (a) We need to use Welch's t-test as the variances appear to differ with the diet.
(b) For Welch
BIOL 300 Assignment 8, Spring 2014
Assignment 8 (due March 28): Chapter 15, problems 15, 17, 18a-c, 22.
Chapter 15
15. (a) A large sample size makes ANOVA more robust to departures from the assumption of
normality. In addition, a large sample size increas
Name:_Student number:_
FINAL EXAM BIOL 300: April 2012
Instructor: D. Irwin
Make sure that your copy of the test includes 10 pages, including this one.
For all statistical tests, make sure that you clearly state your hypotheses.
Unless otherwise stated, a
Midterm GUIDE for Biology 300: October 2011
Instructor: Greg Bole
The mean of the midterm was 41.36 (68.9% or B-) with a variance of 92.46 and a
standard deviation of 9.62. Im guessing it was a pretty bimodal distribution but I
havent graphed it out yet.
Name:_
Student number:_
MID-TERM BIOL 300: February 2012
Instructions:
1. Make sure that your copy of the test includes 6 pages, including this one.
2. Answers can be in ink or pencil. If you want the possibility of re-marking, use ink.
4. Other than a no
Name:_Student number:_
FINAL EXAM BIOL 300: April 2012
Instructor: D. Irwin
Make sure that your copy of the test includes 10 pages, including this one.
For all statistical tests, make sure that you clearly state your hypotheses.
Unless otherwise stated, a
Sir Francis Galton
The history of statistics has its
roots in biology
Inventor of fingerprints,
study of heredity of quantitative traits
Regression & correlation
Karl Pearson
PolymathStudied genetics
Correlation coefficient
2 test
Standard deviation
Sir R
= 67.4
= 3.9
One-sample t-test
standard error
Y is normally distributed
Chapter 11
whenever:
Y is normally distributed
or
n is large
Y = = 67.4
3.9
Y =
=
= 1.7
n
5
Inference about means
Because Y is normally distributed, we can convert
its distribution
N
= 67.4
= 3.9
Standard Error Revisted!
The standard error of an estimate is
the standard deviation of its sampling
distribution.
Y = = 67.4
Y =
3.9
=
= 1.7
n
5
s
SE Y =
n
Y =
n
A sample of 100 from the same population distribution
mean = 67.4
SD = 1.7
Name:_KEY_
Student number:_
MID-TERM BIOL 300: February 28, 2014 (Irwin)
Instructions:
1. Make sure that your copy of the test includes 6 pages, including this one.
2. Answers can be in ink or pencil. If you want the possibility of re-marking, use ink.
4.
BIOL 300 Report Final Draft:
While Reading, Humans eye Does Not See All Letters, Specially in Words We
Use Routinely, Since the Brain Read the Words as a Whole.
Introduction:
Reading is the process of retrieving and understanding some form of information
Midterm Biology 300 GUIDE: March 2011
Instructor: Greg Bole
FAMILY/LAST Name: _ FIRST Name: _
Student number: _
Instructions:
1. Make sure that your copy of the test includes 5 pages, including this one.
2. Answers should be in ink. If you choose to write
Final exam
One variable: Which test?
2.5 hours allotted
Chapters 1-17, 19, 20
Excluding section 9.3, 9.6,14.7, 15.3,
15.6, confidence interval for r
Bring: Calculator (not programmable),
pen or pencil, UBC ID
You will be given: formula sheet & stats
Final exam
One variable: Which test?
2.5 hours allotted
Chapters 1-17, 19, 20
Excluding section 9.3, 9.6,14.7, 15.3,
15.6, confidence interval for r
Bring: Calculator (not programmable),
pen or pencil, UBC ID
You will be given: formula sheet & stats
Biology 300: Fundamentals of
Biostatistics
Final grades have been submitted. Two final exam viewing times will be
offered:
Thursday May 15th, 3:30-4:30 PM, room 225 of the Biodiversity
Research Centre.
Tuesday May 20th, 10:30-11:30 AM, room 225 of the Bio
Pop
sample
take innite number of samples
Hypothesis testing asks how unusual it is to
get data that differ from the null hypothesis.
Ch 6: Hypothesis testing
If the data would be quite unlikely under H0,
we reject H0.
sampling distribution of mean
compare
Two common descriptions of
data
Location (or central tendency)
Describing data
along x-axis (where data generally falls)
Width (or spread)
big width = variation (source of biological change)
Y: each number can be represented by Y
bar above = average (me
binomial
Po=0.5
test whether probability of winning is 286 if null is true is smaller than 0.05
if P < 0.05 > reject null > there is home eld advantage
1. In the World Series, the teams have won at home 286 times and lost at home 243
times. Is there a "ho
BIOL 300: Biostatistics
Course web site on Connect
(older versions can be found !
through searching Biol 300)
Instructor:
Dr. Greg Bole
Department of Zoology
Office: 1026 BioSciences
e-mail:
bole@zoology.ubc.ca
Textbook
Office hours:
Wednesday 10:00-11:30
Sample size 10 from Normal distribution with =13 and 2=16
true values of pop.
Estimating with uncertainty:
Samples and Populations
Frequency!
2
1.5
1
0.5
Chapter 4
X bar: mean of sample
5
10
15
20
25
X = 13.5
s 2 = 12.1
_
estimate of variance
a bit lower
Midterm Biology 300: October 2011
Instructor: Greg Bole
FAMILY/LAST Name: _ FIRST Name: _
Student number: _
Instructions:
1. Make sure that your copy of the test includes 6 pages, including this one.
2. Answers should be in ink. If you choose to write som
Handling violations of
assumptions
Chapter 13
Assumptions of t-tests
Random sample(s)
Populations are normally distributed
(for 2-sample t) Populations have equal
variances
Detecting deviations from
normality
Previous data/ theory
Histograms
Quantil